Question 1

When should I plant watermelon in ZIP 33602?

Accepted Answer

In ZIP 33602, the main watermelon target is around Feb 15, based on the representative Tampa frost station and USDA zone 10a.

Question 2

When should I start watermelon seeds indoors in 33602?

Accepted Answer

Start watermelon seeds indoors in ZIP 33602 around Jan 11, about 21 days before the Feb 1 last-frost estimate.

Question 3

When is the last frost in Tampa?

Accepted Answer

Tampa (ZIP 33602) has an average last spring frost around Feb 1, based on the representative Tampa frost station.

Question 4

When is the first frost in Tampa?

Accepted Answer

Tampa (ZIP 33602) has an average first fall frost around Dec 20, leaving about 322 frost-free days.

Question 5

Is this a guaranteed planting date?

Accepted Answer

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

Step	Date	How to use it
Start Indoors	January 11, 2026	Start seeds under lights or in a bright indoor seed-starting space.
Transplant Outdoors	February 15, 2026	Move hardened-off seedlings outside after the frost-risk window.
Direct Sow	February 15, 2026	Sow seed outside when the crop and soil can handle the window.

Start watermelon seeds indoors around Jan 11

Watermelon dates for Tampa, FL